Hi @Mohammedzuhair , I personally use Arction Lightning Chart (www.arction.com). It is relatively expensive but super powerful if you need high-performance. There are also free options like : https://lvcharts.net
Basically on top margin, DatePicker's is less than TB.
@VAnzala in general nested popup boxes in side of popup boxes are a bad idea since the light dismiss can often cause problems. However, you can sometimes work around the issue by binding the
IsPopupOpen to a property on your view model and control it that way rather than with routed commands.
@TartanLeGrand unfortunately I don't know if a grid with that sort of behavior built in. You could build something similar simply by using basic Triggers on a Grid, however that wont get you the nice animation that is shown there.
yes that's about it. I will try to explain myself a little more
I have DataGrid. when mouse enter in a datagridcolumn or On left mouse button click I want to open ContextMenu.
and the contextmenu desapear when the mouse is hover the datagridcolumn
@TheoEssoh ok that makes sense. I think the example above should point you in the right direction. I would do something like this:
- Create a behavior that you can attach to the UI elements (I would probably suggest looking at attaching it to individual data grid cells).
- Register for the events you care about. In this case it sounds like MouseEnter, and MouseDown.
- Use a dispatcher timer, and close the menu after some period of time. I would probably suggest checking if the mouse is over the context menu before closing it.
With all of that said, opening the context menu on mouse enter is a little unusual. it may get a little difficult to manage the context menus.
what is the correspondence in language version 8.0 or later?
That is something new in C# 8.0 called recursive pattern matching. it basically converts down to this code:
var contextMenu = AssociatedObject.ContextMenu;
if (contextMenu != null)
{ ... }It is just doing a null check, and if the value is not null, it assigns the value into a local variable called contextMenu
Hi, is there a way to manually change or update the validation state of a field? The validation rules as a little inflexible for the situation I'm trying to do. Essentially I'm doing a time-delayed web query as the user types text into a combo box. After about 500 milliseconds, if the text has not changed (IE they stopped typing), I then run a web query to populate results into the combo box's item source. However if there are no results found, I want to set the validation result of the field to failed and put some text in there stating there were no results found.
@SaviorXTanren if you are using MVVM you want to take a look at INotifyDataErrorInfo. I have a small example of using it here
You might also look into setting the Delay property on the binding to 500 to have it manage the waiting for 500 milliseconds for you as well
1 reply
And you'll need 3.2.0 for
MaterialDesignFilterChipAccentListBox
hello!! i need to have this contextual menu in wpf, someone can help me please?
i want to have a contextmenu when i select a zone or a controls or when the mouse enter in a zone and when the mouse over the contextMenu disapear